From 6b469640a7704b3e58589fe25c3032a3a17b6f29 Mon Sep 17 00:00:00 2001
From: Matthias Fax <matthias.fax@greensolid.de>
Date: Thu, 12 Jun 2014 13:18:10 +0200
Subject: [PATCH] Add Wincache

Updated comments

Check for Wincache existence in constructor

Normalized markup

Add Wincache test

Tie Wincache test to test index
---
 min/lib/Minify/Cache/WinCache.php             | 130 ++++++++++++++++++
 min_unit_tests/test_Minify_Cache_WinCache.php |  31 +++++
 min_unit_tests/test_all.php                   |   1 +
 3 files changed, 162 insertions(+)
 create mode 100644 min/lib/Minify/Cache/WinCache.php
 create mode 100644 min_unit_tests/test_Minify_Cache_WinCache.php

diff --git a/min/lib/Minify/Cache/WinCache.php b/min/lib/Minify/Cache/WinCache.php
new file mode 100644
index 0000000..500bdd8
--- /dev/null
+++ b/min/lib/Minify/Cache/WinCache.php
@@ -0,0 +1,130 @@
+<?php
+/**
+ * Class Minify_Cache_Wincache
+ * @package Minify
+ */
+
+/**
+ * WinCache-based cache class for Minify
+ * 
+ * <code>
+ * Minify::setCache(new Minify_Cache_WinCache());
+ * </code>
+ * 
+ * @package Minify
+ * @author Matthias Fax
+ **/
+class Minify_Cache_WinCache
+{
+    
+    /**
+     * Create a Minify_Cache_Wincache object, to be passed to
+     * Minify::setCache().
+     *
+     *
+     * @param int $expire seconds until expiration (default = 0
+     * meaning the item will not get an expiration date)
+     */
+    public function __construct($expire = 0)
+    {
+        if (!function_exists('wincache_ucache_info')) {
+            throw new Exception("WinCache for PHP is not installed to be able to use Minify_Cache_WinCache!");
+        }
+        $this->_exp = $expire;
+    }
+    
+    /**
+     * Write data to cache.
+     *
+     * @param string $id cache id
+     *
+     * @param string $data
+     *
+     * @return bool success
+     */
+    public function store($id, $data)
+    {
+        return wincache_ucache_set($id, "{$_SERVER['REQUEST_TIME']}|{$data}", $this->_exp);
+    }
+    
+    /**
+     * Get the size of a cache entry
+     *
+     * @param string $id cache id
+     *
+     * @return int size in bytes
+     */
+    public function getSize($id)
+    {
+        if (!$this->_fetch($id)) {
+            return false;
+        }
+        return (function_exists('mb_strlen') && ((int) ini_get('mbstring.func_overload') & 2)) ? mb_strlen($this->_data, '8bit') : strlen($this->_data);
+    }
+    
+    /**
+     * Does a valid cache entry exist?
+     *
+     * @param string $id cache id
+     *
+     * @param int $srcMtime mtime of the original source file(s)
+     *
+     * @return bool exists
+     */
+    public function isValid($id, $srcMtime)
+    {
+        return ($this->_fetch($id) && ($this->_lm >= $srcMtime));
+    }
+    
+    /**
+     * Send the cached content to output
+     *
+     * @param string $id cache id
+     */
+    public function display($id)
+    {
+        echo $this->_fetch($id) ? $this->_data : '';
+    }
+    
+    /**
+     * Fetch the cached content
+     *
+     * @param string $id cache id
+     *
+     * @return string
+     */
+    public function fetch($id)
+    {
+        return $this->_fetch($id) ? $this->_data : '';
+    }
+    
+    private $_exp = NULL;
+    
+    // cache of most recently fetched id
+    private $_lm = NULL;
+    private $_data = NULL;
+    private $_id = NULL;
+    
+    /**
+     * Fetch data and timestamp from WinCache, store in instance
+     *
+     * @param string $id
+     *
+     * @return bool success
+     */
+    private function _fetch($id)
+    {
+        if ($this->_id === $id) {
+            return true;
+        }
+        $suc = false;
+        $ret = wincache_ucache_get($id, $suc);
+        if (!$suc) {
+            $this->_id = NULL;
+            return false;
+        }
+        list($this->_lm, $this->_data) = explode('|', $ret, 2);
+        $this->_id = $id;
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/min_unit_tests/test_Minify_Cache_WinCache.php b/min_unit_tests/test_Minify_Cache_WinCache.php
new file mode 100644
index 0000000..64fa60e
--- /dev/null
+++ b/min_unit_tests/test_Minify_Cache_WinCache.php
@@ -0,0 +1,31 @@
+<?php
+require_once '_inc.php';
+
+function test_Minify_Cache_WinCache()
+{
+    $prefix = 'Minify_Cache_WinCache : ';
+    if (! function_exists('wincache_ucache_info')) {
+        return;
+    }
+    $data = str_repeat(md5(time()) . 'í', 100); // 3400 bytes in UTF-8
+    $id = 'Minify_test_cache';
+    
+    $cache = new Minify_Cache_WinCache();
+    
+    assertTrue(true === $cache->store($id, $data), $prefix . 'store');
+    
+    assertTrue(countBytes($data) === $cache->getSize($id), $prefix . 'getSize');
+    
+    assertTrue(true === $cache->isValid($id, $_SERVER['REQUEST_TIME'] - 10), $prefix . 'isValid');
+    
+    ob_start();
+    $cache->display($id);
+    $displayed = ob_get_contents();
+    ob_end_clean();
+    
+    assertTrue($data === $displayed, $prefix . 'display');
+    
+    assertTrue($data === $cache->fetch($id), $prefix . 'fetch');
+}
+
+test_Minify_Cache_WinCache();
\ No newline at end of file
diff --git a/min_unit_tests/test_all.php b/min_unit_tests/test_all.php
index c654b6a..5b76ff9 100644
--- a/min_unit_tests/test_all.php
+++ b/min_unit_tests/test_all.php
@@ -6,6 +6,7 @@ require 'test_Minify_HTML_Helper.php';
 require 'test_Minify_Cache_APC.php';
 require 'test_Minify_Cache_File.php';
 require 'test_Minify_Cache_Memcache.php';
+require 'test_Minify_Cache_WinCache.php';
 require 'test_Minify_Cache_ZendPlatform.php';
 require 'test_Minify_CSS.php';
 require 'test_Minify_CSS_UriRewriter.php';